Elbow-coupling



E. F. MCCABE.

ELBOW COUPLING. APPLICATION FILED APR. H. 1918.

1,320,785. Patented Nov. 4', 1919. r

2 SHEETSSHEE|' ldrmiwy E. r. McCABE.

ELBOW COUPLING.

APPLICATION FILED APR. 11. I918.

Patented Nov. 4, 1919.

2 SHEETS-*SHEEI' 2.

auwzmtoz EDWARD F. MCCABE, 0F MAPLEWOOD, NEW JERSEY.

ELBOW-COUPLING.

weaves.

Specification of Letters Patent.

Patented Nov. at, 1919.

Application filed April 11, 1918. Serial No. 227,955.

To. all whom it may concern:

Be it known that I, EDWARD F. MCCABE, a citizen of the United States, and a resident of Maplewood, in the county of Essex and State of New Jersey, have invented new and useful Improvements in ElbowCouplings, of which the following is a specification.

This invention relates to elbow couplings and has particular reference to that class of couplings of the reinforced type adapted to be used particularly in connection with ash conveying systems and the like.

An important object of the invent1on is to provide in a coupling of the above mentioned character a means whereby certain wear inflict-ed thereupon as a result of the passage of material therethrough may be easily compensated.

A furtherobject of the invention is to provide in a coupling of the above mentioned character a means whereby the structure as a whole may be sufiiciently reinforced to withstand any amount of strain duly imparted thereto.

A further object of the inventlon is to provide an elbow coupling of the above mentioned character which is simple inconstruction, cheap to manufacture and efficient in use.

Other objects and advantages of the in vention will be apparent from the following description taken in connection with the accompanying drawings.

In the accompanying drawings, forming a part of this specification and in which like numerals are employed to designate like parts throughout the same.

Figure 1 is a diagrammatic view of an ash conveying system employing the use of an elbow coupling embodying my invention,

Fig. 2 is a section view taken on line 22 of Fig. 3,

Fig. 3 is a vertical longitudinalsectional view of an elbow coupling embodying my invention,

Fig. 4 is a rear elevation of the same, and,

Fig. 5 is a front end elevation of the same.

In the drawings, wherein for the purpose of illustration is shown the perferred form of my invention, the numeral 10 indicates an elevated tank having means indicated by 11 associated therewith for producing a partial vacuum within the tank. T0 the tank 10 is connected a conduit 12 having communication with an ash receiver 13 employed in connection with a steam boiler 26. With the conduit 12 there is associated an elbow coupling 14 embodying my invention. This coupling comprises a curved pipe 15 having a wall 16 and flanges 17 and 18 adapted for connectionwith similar flanges carried by sections of the conduit 12 as indicated in Fig. 3. l/Vithin that portion of the wall 16 having the shorter radius there is arranged aninspection port 19 over which is disposed a plate 20 secured in position by means of bolts or screws 21. To the pipe 15 at the rear thereof there is secured a casing 22 equal in width to the outer diameter of the pipe 15 as clearly shown in Figs. 2 and 4. There is arranged upon the casing 22 a removable plate 23 which is securedin position thereupon by means of bolts or the like indicated by the numeral 24:. Within the casing 22 there is arranged a mass of preferably concrete indicated by the numeral 25. This concrete is poured into the casing 22before the closure 23 is placed in position thereupon and allowed to harden therein in order to form a suitable reinforcement for the elbow coupling 1% as a whole. While I have specified the use of concrete as a filler for the casing 22 .1 wish it understood that any other desirable homogeneous mass may be employed. It will be readily understood when considering Figs. 1 and 3 that an appreciable amount of wear is inflicted upon that portion ofthe wall of the pipe 15 which has the greater radius due to the passage of ashesthrough the conduit 12 in its course of travel from the receptacle 13 to the tank 10. In time the rear portion of the wall 15 or that portion having the greater radius will become completely worn away in which instance the concrete filler 25 will be called upon to function in the identical manner as that portion of the wall which had been worn away. It has been found in actual practice that a filler of concrete confined within the casing 22 as described possesses a high degree of wearing qualities and that by employing this concrete filler not only as a reinforcement for the joint as a whole but also as a substitute for the original wall of the pipe 15 the life of the elbow coupling may be greatly prolonged. At various times it will be found necessary to inspect the wall 16 of the pipe 15. This may be done by removing the closure or plate 20. This inspection port, by removing the plate 20, serves not only as a means for permitting the inspection of the wall of the pipe but also as a means for permitting a new mass of concrete to be placed within the casing 22 to compensate the wear sustained by the concrete filler 25 upon the complete wearing away of that portion of the wall 16 hav* ing the greater radius. Should it be desired, however, to remove the entire filler 25 from within the casing 22 this may be done by removing the closure 23 whereupon the filler may be removed by any desired means. While I have shown only one elbow coupling embodying my invention as employed in the diagranmiatic structure shown in Fig. 1 I wish it understood that as many of these couplings as there are bends or turns of the conduit 12 maybe employed and I wish it understood further that while I have shown only one form, namely, the preferred form of my invention, various changes may be made in the actual manufacture of the same with out departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, what I claim as new and desire to secure and protect by Letters Patent ofv the United Copies of this patent may be obtained for said pipe having the greater radius of curvature being substantially thickened to re sist the abrasive action of material passing through the pipe, a casing carried at the rear of said pipe, and a mass of wear resist ing material confined within said casing to resist the abrasive action of material passing through the pipe upon the wearing away of the thickened portion of said pipe, and means for permitting the removal of said wear resisting material from said casing.

3. A device of the character described comprising a curved pipe, a casing carried at the rear of said pipe, and a mass of rein.- forcing material confined within saidcasing at the rear of said pipe and engaging that portion of said pipe having the greater radius of curvature to resist the abrasive action of material passing through said pipe upon the wearing away of the thickened portion of said pipe, and a detachable closure for said casing, said closure being adapted to be removed to permit the removal of said reinforcing material.

4. A device of the character described comprising a curved pipe, a casing carried at the rear of said pipe, a detachable closure for said casing, and reinforcing material interposed between said closure and that portion of said pipe having the greater radius of curvature, said reinforcing material having engagement with said closure and that portion of said pipe having the greater radius of curvature and adapted to resist the abrasive action of material passing through the pipe upon the wearing away of that portion of said pipe having the greater radius of curvature.

EDWARD F. McCABE.

five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

